Stave-jointing machine.



P. S. REYMAN.

STAVE JOINTING MACHINE. APPLICATION FILED JAN. 12. 1912.

Patented Oct. 26, 1915.

10 SHEETS-SHEET 1.

[NV N T OR WITNESSES COLUMBIA PLANOGRAPH 60.. WASHINGTON, D. C.

P. S. REYMAN.

STAVE JOINTING MACHINE.

APPLICATION FILED JAN. 12, 1912'.

l0 SHEETSSHEET 2.

WITNESS 5k INVENTOR Alzomey COLUMBIA PLANDGRAPlj COQWASHXNGTON. D. c.

Patented 001;. 26, 1915.v

P. s. REYMAN. STAVE JOINTING MACHINE.

APPLICATION FILED JAN. 12. I912.

Patented Oct. 26, 1915.

I0 SHEETS-SHEET 3.

w m m .75 2 i In 5 n\ lll INVENTOR COLUMBIA PLANOURAPH C0.. WASHINGTON. n. c.

P. S. REYMAN.

STAVE JOINTING MACHINE. APPLICATION FILED JAN. 12. l9l2.

1,158,004. Patented 001:; 26, 1915.

10 SHEETS-SHEET 4.

WITNESSES M [NVENTOR Alto LULUMBIA PLANOCIRAPH 420-. WASHINGTON. D. c.

Patented o t. 26, 1915.

I0 SHEETS-SHEET 5.

P. S. REYMAN.

STAVE JOINTING MACHINE.

APPLICATION FILED JAN. 12. 1912. 1,158,004.

| l I 1 I ,1

1N VEN T 01? P. S. REYMAN.

STAVE JOINTING MACHINE.

APPLICATION FILED JAN. I2. 1912.

Patented 001;. 26, 1915.

10 SHEETS'SHEET Is.

1N VEN TOR A liar zj COLUMBIA PLANOGRAI'H to" WASHINGTON. n. c.

P. S. REYMAN.

STAVE JOINTING MACHINE. APPLICATION FILED JAN. 12, I912.

1,158,004. v Patented Oct 26,1915.

:0 SHEETS-SHEET z.

' woe wloz Ma I Y COLUMBIA PLANOGRAPH c0., WASHINGTON. D. c.

P. S. REYMAN.

STAVE JOINTING MACHINE.

APPLICATION mm m. 12. m2.

ratenmdfigbct. 26, 1915.

- l0 mus-sneer 0.-

INVENTOR WITNESSES sown-u rum-Am m-mmmb-c.

P. s. REYMA N. STAVE .IOINTING MACHINE.

APPLICATION FILED MI. I2. I9l2.

mm Oct. 26,1915.

I0 SHEETS-SHEET 9.

aflvamoa COLUIIIA MNOGIAPM c'o vummon. D. c.

' P., s. BEYMAN. STAVE JOINTING MACHINE. APPUCATIOII FILED IAN. 12. 1912.

Patn'wd Oct 26,1915.

, l0 sums-swan 1o.

coumlu mm: WI! 00.. IAIHMTM. n. c

PHILIP s. REYMAN, or MOUNT CA MEL, IL INOIS. I

STAVE JOINTING MACHINE.

I Specif cation of LettersPatent.

Patented Oct. 26,- 1915.

Application filed January 12, 1912. Serial No. 670,800.

To all whom it may concern. l 7 Be it known that I, PHILIBS. ItnYMAN, a citizen of the United States, residing at Mount Carmel, in the county of Wabash and will enable stave and other blanks of any width to be fed continuouslytoan endless carrier which passes them betweena pair of saws or other diskicutters'adapted to operate upon the edges of the blanks and trim hem to the proper bevel-and longitudinal curvature, so that when staves thus treated are assembled into a barrel their edges will all coincide with planes radiating from the center of saidbarrel.

In the following description I shall as sume that the machine is used for the joint 'ing of barrel stares, but itwill be undereach state is'placed upon a carriage which can be moved back and forth between a pair of saws; said carriage having a curved surface on. which the stave is rocked during its passage between the saws in' order'to cause the saws to operate at points separated more and more as they approach the middle of the stave and then at points which gradually approach as they proceed toward the end of the stave. In present invention the stave lies fiat upon an endless carrier belt which is raised and lowered as the stave passes between the saws, in or'derto give the proper curvature to the edge's'and insure the desired bilge to the completed barrel. In my patent aforesaid the sawscan be adjust-- ed angularly at difierent distances apart to' accommodate stave's of difi erent widths. In

my present invention the sawscan be adju-stednot only in that manner but also vertically on theirsupports to compensate for teeth always at taken on the line 2--2,

conform closely to the longitudinal curve of the edges of the stave and maintain their the properangle to said edges. r Y I,

The endless carrier is preferably a chain, and in order to'permit it to be raised and lowered during the passage ofeach stave between the saws, I have provided an eccentric sprocket wheel atone point in its travel which automatically slacks the chain and takes itnp again at the proper times.

The inve'ntionwill be better understood from the following detailed description, read in connection with the, accompanying drawings, in which Figure l is a side'elevation, partly in section of a stave-jointing machine embodying my improvements Fig. 2 is a plan view 7 Fig. 1, and on a larger scale. Fig. 8 is-a cross sectional ele- Vationtaken on the line 33, Fig. 1 on a largerscale. Fig. I is a cross sectional elevati'on,-taken on the line 4-4:, 1, on a larger scale. "Fig. 5 is a cross section taken on the line .55, Fig. 1, through the driving shaft and the cams which cause the saws to conform to the longitudinal curve of the stave. Fig. 6 shows one of the movable leaves with the shoe hinged thereto. Fig. 6 is'a plan'view of the same. Fig. 7 is a plan view of the driving shaft,-showing a section of the main spur gear andeccentric sprocket. Fig. '8 is a plan view of the stave supporting shoes and one ofthe sawsQ Fig. 9 is a' sec., tional plan View on-the line 9.9,Fig. 5. Figs. 10 and 11 are diagrams illustrating the rela;

tive widths and curvatures of the stares. Fig. 12 is a perspective View, som'ewhat'enlar-ged, showing one of'the saws and its holder. Fig. 13 is 'asectiona'l plan View of thechain sprocket at the left hand end of Fig. 1. "Fig. 1 1 is a similar view of the sprocket at the right-hand end of Fig.1. Fig.- 15 is a cross section of the left-hand end of the chain support, taken on line 15, Fig. 1. Fig. 16 is a similar cross section at line 16 16, Fig.1. Figs. 17,18 and 19 show the manner in which the saws conform to the longitudinal curve of thestave. Fig. 20 is a cross section of the main shaft, shows ing the levers and links which operate the devices for converging the saws. Fig. 21 is an upright crosssection of the machine on the line 2121, Fig. 1. Fig. 22 is a cross e tion at 11.1. 9 2%22, Fig. 1-. Fig. 23is a detail section on theline 33, Fig. 1. Fig. 24 is a section on the line 2424, Fig. 1. Fig. 25 is a side elevation of one of the guide bars for the chain carrier. Fig. 26 is a side elevation of the central support for the chain carrier. Fig. 27 is a side elevation of one of the movable leaves for supporting the stave blank. Fig. 28 is a top plan view of the entire machine, the saws being abnormally spaced apart, the leaves being broken away and the shoes and presser rolls omitted. At the outset, it may be well to call at tention to the shape of a stave. A barrel is not generally a true spindle in shape, that is to say the bilge or curvature does not run from end to end. The end portions of a barrel are conical, the bilge occupying the middle portion of the barrel. When considering a fiat stave, therefore, the edges at the ends, while tapering toward each other, are straight for several inches. Between these straight portions the edges have a longitudinal curve, the two curves being most widely separated at the middle of the stave where'they are tangent to lines parallel with the center line of the stave. The stave when produced is a true geometric'section of the completed barrel. The wider the stave, the greater the bilge or difference in width between the ends and its middle point. For instance, a stave two inches wide at the ends will beapproximately two and three eighths inches wide at the middle, while a stave six inches wide at the ends will be seven and one eighth inches wide at the middle. 1 accomplish the jointing of such a stave by means of two revolving saws whose planes are radial to a common horizontal axis about which they can be adjusted. The stave passes between them in a horizontal position, being lifted to increase the width and lowered to narrow it. Now in order to form the straight portions or quarters, as they are termed, it is necessary for the saws to be closed or converged toward each other at their rear edges before starting the stave in between them. In other words, they must be partially swiveled or rotated upon vertical axes substantially coinciding with the points at which the cutting is effected. The

stave enters, and as it is gradually lifted the" saws act at more widely separated portions and form the quarter. Upon reaching the bilge, the saws must be gradually swiveled, the angles between their horizontal diameters becoming greater until the widest point of the stave is reached, at which position the two saws have their horizontal diameters parallel, and the stave is at its highest level. As the saws follow the curvature of the stave toward its other'end; the stave meanwhile descending, their horizontal diameters gradually converge in the other direction until they stand at the proper angle to complete the other quarter'of the stave,.whil said stave drops to its original level. N on a' stave six inches wide atthe ends, increase in width at the middle is one one eighth inches, while on a stave inches wide at the ends the increase at a middle is only three eighths of an inch. the staves are of uniform length this that; the divergence of the saws when ting the quarters must be greater for wide stave than for the narrow one.

The machine which I am about to d is an organized instrumentality for ca M the stave to gradually rise and fall (I its forward travel between the saws, a? also for-causing the revolving saws to verge, become parallel and then con w oppositely as the stave passes between and to automatically adjust their dive i at the quarters to correspond with the of the stave which is under treatment:

The working parts are mounted H frame 1 of suitable height, in the lower of which is located'the mainshaft 2, j naled in bearings 3, and carrying a sui H s pulley or other means whereby power. be transmitted to it. In the drawing Fig. 5), I have shown a friction disk 4. cured to said shaft by a key 5 and arra r adjacent to a loose belt pulley 6. Be against the hub of this pulley is a l sleeve 7 whose opposite end is provided spiral cams 8 cooperating with static spiral cams 9 on the end of the bearing;

By partially revolving this. sleeve, the 1 i cams cause it to slide lengthwise on the n: r 2 and thereby press the pulley into tionalcontact with the disk 4 and impart r0- tation to theshaft. A pinion 10 on the inner end of the s 2 meshes with a spur gear 11. on a dri shaft 12 journaled in bearings 13. A d v ing-sprocket 1 1 is fastened to said g any suitable manner, said sprocket eccentric to the shaft 12 for a reason wh will appear later. An endless belt p. around the sprocket 14 and two support sprockets 1 5 16 arranged at the ends of machine and on a higher level than: driving sprocket. The belt is kept taut all times by a belt tightener sprocket roller 17 which is journaled in one end pair of levers 18, pivoted at their other to the frame 1 and urged-against the by a spring 19 which abuts at against said lever and at its other against a boss on the frame 1. The emu belt is preferably a chain 20, as shown the right hand endof Fig. 1. At suite distances, corresponding with the length: a stave :0, special links are provided means for engaging said stave. so the will be carried by the chain in the direct? of the arrow :1], Fig. 1. One of these li has a wedge-shaped notch 21 into which forward end of the stave is thrust and by I V which it is clamped down upon the chain.

The rear of the stave is engaged by a shoulder 22 on another link. wh ch acts to force the stave firmly into the heoked link and:

' tween a pair of links 21, 22,1plusthe short a distance on thegchain for-carrying the staye out from between the cutters,,and in the ma chine illustrated the total length of the chain is four times this circumference.

. The supporting or idle sprockets 1 5 16 a-re not mounted upon the frame l but are secured. to a narrow rigid chainguide over whihh the chain travels and which is capable of being raised andlowered as the stave passesbetween the saws. This chain guide, at the left hand of. Fig. 1 consists of a fiat plate 28 lying in a horizontal position and fastened by screws 2% to the top of a-block Resting on this plate are twoiparallel 1 angle irons 26 spaced apart suitable dietance for the chain to slide freely between them the upright flanges of said angle irons serving as guides for said chain The screws 24 pass through the horizontal flanges of said irons and secure them to the plate23. The block 9'5'is made in halves which are riveted to the opposite sides of a thin bar 27 which extends from-the block to the right hand end-of t e machine. Beginning at the right hand end 'o'firthe block the upper edge of said bar is on the same level as the topor" the plate'23; while its (thick; ness is the same as that ofthechain, which rests upon it. Uprightiguide plates are secured on opposite sides of 'the'bar. 27 throughout the greater part of the right iand end .of'the "machine to. guide the chain in a. straight line in its travel alongI sa id bar.

A .U-shaped casting is slipped upon the right hand end of the bar from below said casting being achustable lengthwise of said bar by means of the slots 29 through which the securing bolts 3Ov pass. Theright hand'end of this casting is bifurcated to form arms 81 between which the: right hand idle sprocket 16 is journaled on an arbor 'The castingcan be moved lengthwise by means of an ad usting screw. abut ing against a lug 34: on said casting and meshing with a screw-threadedhole in a boss on the under side "Of-the'Lbar Q? This boss and the block 25 form the-points of sup;

port for, the chain guide and its guides.

pair oflinks 36 webbed together arepiyoted to opposite sides of the bossj85'and also to lugs 37 on the frame 1.; similarpair of links 38, of the same length as the links 36, andjpreferablyconnected by a cross bar 88 are pivoted to lugs 39mounted onthe frame and also to an; arbordQ; extending trans- Versely through thecheek pieces lwhich are bolted to thesides; of or integral with the block 25. These twopairs of links'are parallel, so that the chain guide can be raised and lowered and yet always preserve a 'herizontal posltion; the action be ng like thatot the well-known parallel ruler;

The mechanism for raising and lowering the chain guide comprises a roller 42 carried bytwo rocker arms 43 pivoted atl to the frameof the machine. One ofv these rocker arms has an extension to which 'is pivoted .one end of a; connecting rod 46 Whose other end is connected to a crank pin 47 on themain spurgear .11. V The roller 42 bears against'alcarn' li secured tothe bar 27-.

This cam is preferably pivotedto said bar at and its lower end 'is adjustable by j' means ofa set screw 50which passes hor Zontallythrough a thickeneddepending I portion 2' of the bar 27. This adjustment is forthe purpose of varying the bilge 'giyen to the stave. The portion 27- of the barisr held between gi'iide-plates 51- secured to chairs. 52 which arebolted to theframe l, for the'purpose of guiding bar 27 truly vertical. Asset screw 53 is tapped into the un der side of the portion 27 and abuts against the framebetween said'chairs, so that the bar 27 can be adjusted Vertically at 7 point, and at the same time receive a solid support 'from said frame when in its low ered position. "It will be understood that at each revolution of the driving shaft the connecting rod-actuates the r'ockerarms, and the roller acts upon the cam 1-8 andlifts the chain guide, the portion 27' sliding vertically between. the guide plates 51; As the roller recedesand the chain guides drop, the Weight ofthe guiding bars; and the chain,

and also the pull of said .chain' upon the back sprocket 15 all act: to lZGQPthQ cam 148 in close contact with roller. The con; figuration of the c'amliS, taken in COI1 1l6(J-' tion with the var in rate of s Jeed and travel of the roller 42' in itscontinuousos cillation to and fro, can be'madeto give, the chain guide. and the shoesl'iereinafter menv tloned, the proper rlslngand falling movementsand the dwell to produce tiedesired shape of stave. The necessary dwell While the stave is passing bctwecnthe saws is produced by the rocker arm A?) and roller-d2 swinging. out to theright and back, from the upper end of the cam Extending from the front of uifmchin,

that isato say, therighthand endin Fig.

. 1, and located on either side of the guide leaves are mounted and operated, it will be necessary now to explain the mounting of the saws. v j

Each saw 55 is secured by screws '56 to a collar 57 which is screwed upon a screwthreaded central stud 58 projecting from a hub 59 on a mandrel 60. Inner and outer.

bearings 61 for said mandrel are provided in a forked standard 62 and between said bearings a beltpulley 63 is secured to said mandrel. The standard is fastened by screws (Sat to a bracket. Inasmuch as these brackets are dissimilar in shape, the right hand one in Figs. 4. and 12 is numbered 65 and-the left hand one66. Each bracket is mounted on a joint, so constructed that it is capable of movement about two axes at right angles to each other. .The preferred mode of mounting is illustrated in the drawings, and comprises a horizontal shaft 67 running lengthwise of the machine and free to rotate in bearings 68 supported by the frame l. Fitting between said bearings are two blocks 69 70"each having "a circular groove fitting the exterior of the shaft, the block 69 being below and the block 70 being above said For a portion of v their length the' shaft. blocks are lnteriorly recessed to receive a short sleeve 71 which has a slot in its under 7 side. A stud 72 is screwed radially into the shaft through said slot, and another radial stud 73 is screwed into the upper side. of said sleeve, each stud passing snuglythrough a hole in its corresponding block 69, 70. The brackethas at its lower end a circular enlargement provided with an annular shoulder 65 fitting a rabbet' 69 on. the

'block 69. The block and the enlargement have flat meeting faces, and in each face.

is an annular groove concentric with the stud 7 2 to contain a plurality of antifriction balls 74%. The stud 72 passes centrally through the enlargement 65,'so that the bracket 65 is thus pivoted to the shaft 67 but on an axis radial thereto. The upper bracket 66 is similarly pivoted on the radial stud 7 3, by means of-a circular-enlargement'66,

which has a shoulder 66 fitting the rabbet on the block 70, and a ball bearing 75 But since the upper stud 73 is screwed into the sleeve 71 instead of into the rotatable shaft 67 the two brackets can tie-independ- 'pintle 79 projecting centr-ally upward fr 67, so that when the lever 84 is operatedmachinefl have provided means for shi that these axes are in the same vertical as the axis of thepintle '79 u on which ently rotated or tilted about'the axis of shaft, in addition to the independent tion of each about its stud.

Thejweight of each bracket and its sa yieldingly supported by a helical sprinfi lnterposed between a shoulder on the un side of the bracket and some portion-of frame 1, as clearly indicated-in Fig. 4. Ffil rotatin the brackets about the axis of" shaft 6 in order to tilt the saws 55 and m r vary the angle between them with respect it the varying widths of the staves, uh bracket is pivoted to a rod 77. whose l end has a horizontal eye 78 received upon a vertical plunger 80 whose'vertical intersects thefcenter of the shaft67 at point from which the pivots 72 73 radii On one side of said plunger is a me meshing with a pinion 82 secured u shaft 83 which is suitably journaled in frame and has a. lever 84 for operating The lever has a latch 85 cooperating'wi a notched quadrant 86, so that it can be i at any desired position. A thrust .roll bears against the back of the plunger to it in mesh with the pinion Theroller pinion are inclosed in a box88 with aduaflexcluding cover 89. i The saws are arranged with their pl of revolution radial to the'axis of the sh the'brackets 65 .66 are swung up or do as the case may be by means of the sup 0 ing rods 77 the saws always preserve radial relation to the shaft 67; the result the movement'of the brackets being simpl'yfi tilt the saws simultaneously and increase diminish the angular distance between t m Each saw' mandrel-'60 lies in a plane t verse to the shaft 67 and the line of tr of the stave blank. In my prior patent tioned heretofore, the planes of the two drels coincided at all times and were pendicular' to the axis of. the shaft which they could rotate. .But in my preaqg theplanes of the saw 'mandrels so that will at all times stand atan angle on v side or the other of a plane lexactly'per dicular to that of the shaft 67; the 0 being to enable the saws to follow I! closely the longitudinal curvature of edges of the stave, as explained at the ningof this description. It will be noticed that the axis of the 72 is in line with the cutting point of th carried by bracket 65, and that the axis stud 7 3 is similarlyin line with the cut point of the saw carried by bracket 66 rods 77 are free to swivel wit the br 65 66." Any swiveling of the brackets 11 these studs will therefore result in t the saws on verticalaxes, and willacause their rear edgesto approachorseparate, .as

the case maybe, their 'frontedgesrenaaining substantially stationary. This-.convepgmg and diverging action of thesavvs .at the rear occurs during the passage .ofveach'stave, and istherefore. .efiected'oby .mechanism which operates in time. with the other parts of the machine.

66 isa tail piece 90, having at its rear end .a transverse portion 91 which rests upon a supporting roller. 9-2. journaled. upon astud I 93 whichais carried-I by theiblockhor lug 3.9. To maintain theseparts in proper relation,

th rollers may be grooved and theunderside of the portions 91 shaped ..to-. enga ge with saidgrooves. Depending from each tail piece is a .cam finger .9&.having1fiatparallel sides. .The two :fingersare arranged side by side with justosinficie-nt spacei between them when the saws and thenb rackets are parallel. with each othertosreceiveitwo parallel studs 95. provided with anti friction rollers .96 which are incontact withoth e in ner faces oithe. fingersfi ilhestuds are carried .by a forked arm :97 .pivgted to thelugs 98. projectingi'roin.the block-:39. A :strap 99 is secured .to. said. arm and extends around I in front of the lingers ancl,;rollers,.ithe outer endsof the studs beingsecuredlto said strap. The side portions or". the strap engage with the outer faces ofthelfingers-for the purpose of holding fingers or cams snugly against rollers 9.6 at. all times. An am 100 projects downwardlyzfrom the arm 97. and, is.

pivoted to. two links :101 and-102 connected respectively to .two levers 1O8 1 04 wliich ajre fulcrumed in blocks 105 'supported by the frame of themachi ne, andadj nstable by means of set screws-106,;for adj-usti ng the time of action ,of the rollers 96; also-the 1 dwell when forming. straight quarters on stave joints. These two blocks are loc'ated on opposite sides of the eccentricsprocket 14:, on one side ofwhich is an eccentric surface 107 engaging with rollers 108 108 pivoted -on the levers 1-03 104-, so thatas the sprocket revolves this eccentric or cam {will actuate the levers and rock thejbellcrank lever composedof the arms 100-97 and thus raise and lower the rollers 96. =Q-wing to the fiact that, the faces of eachfinger fieqare substantially parallel with ftl'lG plane of the sawsxca-rried by its bracket, (seeiFig. '5) the axis of inclination of brackets 65"66,-shown in Fig. 5, is the axis -shaft7, as dott ed in at intersection of curved dotted-linel--9 9,

said shaft 'being the axis o-ffbrackets c arry- 'lng cam :fingers, bell crankleverarin -97,

carrying rollers:96-96, are shown at'their central elevation therefore brackets are in 7 z a parallel position horiz ontallyitherejore when saws attached to *bracketsare spaced at distance apart, the cam-fingers necessarily 1 Xtending rearwardly from eachibr'acket assume a similar angle, hence any move-J Inent ofarm 97 downwardly would cause 1 brackets. to diverge whlle an upward move-Q rnent would cause brackets :and saws to converge a. proportionate. amount .depending .onangular separation of saws as shown by. dotted lines 9e. It follows that when I the .sawsareftilted apart said fingers stand at a variable angle to theperpendicular line of movement of the rollers, which causes said rollers .to push said fingers apart ehen'ithey descend. During. the upward movement of said rollers, the said portions ofcthe strap 99 act to force the fingers tog ward each other a variable amount; It follows, therefore, tha t at each revolution .of

the .cam LOJY'the brackets .65 66 will be swiveled'on their studs 72 73; first in one direction and then in. the other, so that the saws willbeefirst converged atthe rear and then separatedaa proportionate amount conform ing. to Widthfof stave being operated upon, which is effected by the changed angularity ofthecam lingersfle, occurring simultaneously with the'changed angularitylof the plane of. the saws in spacing the same for diallyin the opposite direction from the pin I 110 andcar-ried by a sleeve 112 which is free to rotateolithe shalft 67 A-bar. 113 is fas tened to said sleeve and runs rearwardly to the block- 50 to which it is secured. llhe rear ends of the movable leaves 54 are fastened to plates ll l which rest upon brackets 115- rigidly bolted to th e guide plates 28 not far from the front edges of the saws'. 'Th e upper surfaceof thesebrackets is curived concentric with the axis of the shaftfil."

Elie plates 114 are provided with knuckles 1 16 which are hinged by knuckles ll'Z-the plates 117 to which are secured the" shaped shoes 118,-which inclose the front edges of the saws atthe pointswhere they exert :their cutting action upon the stave blank. Curved, brackets 11 5, constitute a pendicnlar movements and which arepivotally connected to plates 1 17. 'l herefore when-the chain guide is raised and lowered perpendicularly, by means of rollers 42,

mounted in oscillatin rocker arm 45 act-= ing -against cam 4:8,the curvedbrackets 1'15, attached to chain guide are lifted and glowcred therewith, thereby causing the shoes 1-18,;attached to plates 11 7 plates 114, and

table leaves 5%, to ascendand'descend angu-- support 1501 plates 114:, in their angularpen iso larly in unison therewith, andit necessarily follows that plates 114-, supporting plates.

117" to which shoes 118 are secured, necessarily slide out over curved brackets 115 when ascending and inwardly when descending. The inner legs of these shoes serve as a support for the edges of the stave between thesaws, and control the curvature of the stave by determining the relative height of said edges with reference to the center of the stave which is supported by the chain guide. shoes are only a convenient means of supporting/the inner legs, and any equivalent 'meansof support may be used. The hinging of the plate 117 to plate 114 is in order to permit theshoes to swivel with the saw brackets and thus follow the saws when the latter are converged or separated by the cam action of the rollers and strap upon the fingers 94. The plates 117 are each pivoted by bolts 119 to one end of a link 119 whose other end is pivoted by a pin 120 parallel with the saw mandrel to lugs 121 on the upper side of the corresponding tail piece These links act in unison with the links 109 which support the leaves, and their purpose is to hold the shoes 118 parallel with the plane of the saws in their upward and downward travel and for the further purpose of holding and converging the leaves 54 in unison and in line with the saws. Leaves 54 have a triple purpose as they are mounted and held in a horizontal position and act as a table to support the stave blank, to

' hold the shoes 118 in a horizontal position,

and by moving in or out in unison with the saws over the curved brackets which are concentric with the axis of the shaft 67, the

leaves act as a gage to determine the width of the stave a given blank will make.

It will'also be observed that the upper portions of the chain guides 28 are cut away to permit the shoes to be moved in close to the chain when a very narrowstave is being jointed. This is shown in Fig. 4, where the guide plates 28 are shown asbeing extra deep at this point to give them sufficient rigidity. The table bar 27 is also made deep at this point, and is beveled to an edge below to permit the saws to approach closely. Extending laterally, from each of the plates 117" is an arm on which is supported a sheet metal plate 123 to receive the strips cut from the edges of the stave blank.

Immediately. above each shoeis a. presser roll 124 pivoted upon a stud 125 projecting from a slide 126 mounted upon a' horizontal arm 127 and secured adjustably thereto by a set screw 128. The arm 127 is bent outfor the saw mandrel. The lower end of The outer legs of said ""this lever abuts against a helical spring whose other end rests against a portioniej the bracket 65 or 66 as the case maybe. adjusting screw 127 mounted in a lugflfl'i takes against the back of the lever 127i, limit the downward movement of the pre roll. These spring pressed rolls press 1 edges of the stave yieldingly down ontoshoes 118, and since the center of the stain is supported at ahigher level by the ri chainguide, the stave'will be curved to in respond with the bilge of the barrel which it is to form a part, so that the" ofv said stave will be jointed properly make a tight joint when the barrel is sembled. i,

In the rear of each saw'and in .the 15!! of revolution thereof is an upright blad ewhich is mounted on a lug 133 on bracket carrying the saw and serves to k the kerf open and as a uard. 1

It will be observed t at the cutting of the saw meets the stave blank at a pa in. or near the vertical axis of the stud which the saw bracket is swiveled. In 0 to maintain this relation of these arts, is necessary to provide for saws of 'fie diameters and also to take up wear astlili diameter of any given saw lessens from quent sharpenlngp To meet this req .ment, the saw standard is provided with. carriage 134 which rests upon ways which are-inclined to the horizontal surf of the bracket 65 or 66 on which :they erected, preferably at an angle of about 1 degrees, in a plane normally vparallel w' the travel ofthe carrier chain. The carria; and the ways are preferably rabbeted gether, and can be relatively adjusted means of clamping bolts 136 p through slots in the ways. Movement in direction carries the saw upward and ward toward the cutting point, while mo ment in the opposite dlrection carries downward and backward. The outer of the standard is provided witha fee in which is a slot 138 parallel with the face of the ways 135, so that the sta can be properly secured by the sore passing through said slot into the bracket.

The saws and the chain carrier are. by belting (not shown) in the usual ma 7 The operation of the machine follows z-Automatic stopping L which has been omitted for the sakeof. g ness, halts the chain carrier 20 with a h u link 21 a short distance in front of the The operator places a stave blanks. the hook, and then throwsthe lever 84 the leaves 54 in or out until their. bowed edges, servin as a gage, rest: the outer edges of t e blank and dete the width of the proposed stave. This eration alsotilts the saws to the prop gular'position. The machine is then t on its two edges.

ed, and as the link 2:2 comesup over the turns up vertically behind the'stave and exerts a thrust upon it, forcing its forward end snuglyinto the hook ofthe forward link 21 and clamping the blank solidly to the chain, besides holding it centrally betweenthesaws, so that an evenly divided or corresponding bilge and 'joint is formed The stave blank rests on the upper edge of the chainand the movable leavesee. The spring-actuated presser rolls 12 i keep the blank pressed firmly down upon the inside edges ofthe shoes 118 which serve as supports for the edges of the stave and give it its proper elevation in time with its travel between the saws, so as to control the shape to be given .to the edges of said stave; The eccentric 107 operating on the levers 103 104, as described, the links v101 102, the rock arms 100, 97, the rollers 96 and. the fingers 9e, has caused the brackets 66 to be turned on their pivot studs ,72 I

73 so that when the stave blank reaches the saws 55, they are converged at their rear edges, as shown in Fig. 17. As the blank moves forward between the'saws. the crank pin 47 and connecting rod 46 rock the roller 42 so that it acts upon the cam 48 and gradually lifts the table, chain, movable leaves, shoes, and presser rolls, the links 36 38 holding the chain guide level and enabling the stave blank to be acted upon by those teeth of the saws which are farther and farther apart as the chain guide and shoes rise, thus giving the stave its proper increase in width. Meanwhile the eccentric sprocket leis giving sufiicient slack to the chain to enable it to be raised in this manner and yet keep taut at all times, assuming the quarter to be joint-. ed and the saws now acting on the bilge port-ion. As the stave proceeds the brackets aregradually turned by the cam fingers and rollers to bring the saws more and more toward parallelism, (Fig. 18) until at the 1 middle of the stave they are exactly parallel, and the shoes and chain guide areat their highest level. From this point onward, the shoes and chain guard are gradually lowered, as before described, and the saws are gradually separatedfat the rear until the'bilge is formed, then remaining stationary until the end of the stave is reached,

at which time the saws-stand as shown in- Fig.19, and the shoes and chain guard have beenlowered to the original level. The axis of each saw mandrel 60 is at all times radial to the curvature of the edge of the stave I The rollers 108 are set a given distance away from the surface of the eccentric-107 for the purpose of creating a dwell or non action of the camming rollers 96 during the I time -thatthe quarter on the stave is being distance apart at the operated upon by: the, saws; According Fig. 1, the greater radius of the eccentric 107 7 V is at a point above and to the right'of'the reference numeral 107, and by the timethis greater radius in its movement upward has passed the right hand roller 108., the cam rollers 96 will be at their upward-end of travel, from which time on there is a dwell until the increased radius of the cam or eccentric comes in contact with the left hand roller 108. a 'N ow after the forming of the first quarter, on the :stave, the increased radius of the cocentric comes in contact with the roller 108 at the left, causing'the rollers 96 to graduallydescend, thereby increasing the divergence of the saws at their back portions and enabling the saws toform the curve or bilge of the stave along the middle thereof. After the greater radius of the eccentric has passed the left hand roller 108, there is adwell of the rollers 96, allowing the last quarter to -be formed and the stave to be carried out from between the saws, The eccentric then engages the right hand roller 108' again and throws up. the rollers 96, thus'closing the saws again at the. back ready for the next stave. 1 I 7 When the hooked link reachesthe left hand idle sprocket 15 the curvature of the chain in passing over said sprocket opens said link and releases the finished stave. The machine is calculated to operate upon four staves dur-' ing one revolution of the chain, the driving shaft making one revolution for each stave, and repeating the entire cycle of operations at each revolution; the time consumed being that'required for each stave to pass between the saws. I

I In accordance with the provisions of the patentstatutes I have described the prin ciple of operationof my invention, together with the apparatus which I consider to be the best embodiment thereof; but Iwish it: to be understood that the invention can be 1 carried out by. other mechanism, not departing from the scope ofmy invention as a whole, and that the apparatus shown is only illustrative. I a v Having thus described my invention what I claim is 1. A; machine for jointing a stave which comprises a pair of rotating sawswhosej planes of rotation are inclined in opposite; directions, means for passing the stave blank horizontally between said saws, meansfor lifting and loweringsaidstave during such passage, and means for maintaining said saws with theirplanes of revolution tangent to thelongitudina-l curvature of theedges of said stave and their cutting edges at a fixed ting is being effected.

lee 0 points where the cut- 2. A-machine for jointing a stave which I comprises a pair of rotating saws whose.

through the points of cutting to keep their planes of revolution tangent to the longitudinal curvature of the edges of said stave at :the points where the cutting is being effected. a

3. A machine for jointing, staves, comprising a'pair of saws, means for swiveling them on axes passing through their cutting points, shoes adjacent to the cutting edges of said saws for supporting a stave blank close thereto, means for raising and lower.- ing the stave blank as it passes between said saws, and means for raising and lowering said shoes on diverging lines to support the stave blank at its edges as it rises and falls.

4. 'A,machine for jointing staves, compris ing a pair of saws, supports therefor mounted toswivel' on vertical axes passing through the cutting points of said saws, shoes adjacent to the edges of said saws and supporting the edges of a stave blank close thereto and between said saws, means for raising and lowering the stave blank as it passes be tween said saws, means for raising and lowering said shoes on diverging linessupporting the stave blank at its edges as it rises and falls, levers pivoted on the swiveled saw supports, spring-actuated presser rolls on said levers making contact with the upper side of said stave blank over said shoes, and following the angular, and swiveling movements of the saws.

5. A machine for ointing staves comprising an endless carrier for the stave blanks, a rigid support for said carrier, means for raising and lowering said support and car-. rier while the latter is in motion, rotating saws located on each side of said carrier, means for tilting said saws toward and away from said carrier, measured in a planetransverse to the travel of the carrier, and means for swiveling said saws on vertical axes coinciding substantially with the points of cutting.

6. A machine for jointing staves compris-v ing an endless chain carrier, a rigid support therefor, means for raising and low ering said support and that part of the carrier resting thereon, and a sprocket for driving said chain adapted to slack the same to permit sald support to be raised, two 611- cular saws on opposlte sides of said carrier mounted to swivel on vertical axes at their points of cutting, and means for swiveling said saws in synchronism with the rise and fall of said carrier.

7. A machine for jointing staves comprising an endlesschain carrier, s rigid support therefor, means for raising and lowertheir tilting movement to vary the horizons ital angle between the planes of said ing said support and that part of the rier resting thereon, and an eccen sprocket for driving said chain, two lar saws on opposite sides of said ca mounted to swivel on vertical axes at th points'of cutting, and means for swivef said saws in synchronism with the rise a fall of said carrier; 7 8. A machine for jointing staves ing an endless chain carrier, a rigid port therefor, means for raising and low' ing said support and that part of the mi k rier resting thereon, an eccentric'driv sprocket for said chain, and'idle sprock at the ends of said support, one of said i sprockets being adjustable longitudinallyfi of said support, two circular saws on oppo-isite sides'of said carrier mounted to swivqkl on vertical axes at their points of cutting and means for swiveling said saws in chronism with the rise and fall of said" rier. V 9. A machine for jointing staves com ing a pair of rotatable saws, a longitudinal shaft, members for supporting said so: each capable of independent angular mov' ment about the axis'of said shaft, pivots said supporting members in line with cutting edges of said saws, rods pivoted said. members, a vertical plunger in with the pivots, on which said rods a swiveled, means for adjusting said plung up and down to tilt the saws-toward away from each other and to hold their cut a ting edges at'any'given distance apart, means for giving said saw-supporting m I bersa swiveling movement independently I L without varying the width between cutting edges. a V r '10. A-machine for jointing staves, I prising a pair of rotatable saws, a longit'kr dinal shaft, members for supporting saws each capable of independentan'gu movement about the axis of said shaft, ots for said supportingmembers in line the cutting edges of said saws, rods piv' to said members, a vertical plun' er in with said pivots, on which sai main, and supporting rods are swiveled, mean; for adjusting said plunger up and downii tilt .theflsawstoward and away from other and to hold their cutting edges at? given distance apart, and means for a matically giving said saw supporting o bers a variable reverse swiveling mbv w. a independent of. their tilting movement corresponding to the angularityassumedm the saw supporting members to vary horizontal anglebetween the planes of saws without varying the width betwegt their cutting edges. A

11. A machine for jointing staves prising an endless chain carrier, a' 1'1 table for supporting the'samefmeanscutting in a plane which is inclined ,to aplane at rightangles to'the travel of the 'wor-k, parallel links connecting said table with the frame of the machine,a cam s'ecured -tosaid table, means for driving sa1dcha1n,,-and a rocker arm engaging withsald cam and op-' erating synchronously with said driving mechanism. v

12. A machine for ointing -staves,com-

arisin an endless chain carrier means cut ting in a plane which is inclined=to a plane at right angles to the travel of the work,

a table comprising a flat plate and a narrow bar arranged in a vertical plane'and in line with saidflat plate, guide plates secured to said flat plate and bar, parallel links pivoted to said table and tothe frame of the machineya cam secured adjnstably to the under side of said table, -a=rocker 'arm engaging with said cam, anda driving shaft carrying a crank pin connected to said rocker arm.

13. A machine for jointlng staves coma prising a longitudinal cylindrical .shaft, a f short sleeve thereon havin g a slot, curved blocks fitting said shaft and-sleeve above and below, a stud extending radially from said shaft through the slot in said sleeve and'through one of said blocks, a second stud extending radially from said sleeve through the other blo'ck, and'c'uttensupporting members swiveled onfsaid studs.

14. A -machine for jointing staves comprising a longitudinal cylindrical shaft, a

a short sleeve thereon-having a slot, ciu ved blocks fitting said shaft and sleeve above and below, astud 72 extending radially vfrom said shaft through the slot I in said sleeve and through one of said b'loeks, a -sec-' 0nd stud 73 extending radially from said sleeve'through the other block, and cuttersupportingemembers swiveled on said studs,

ing-radiallythrough said block s,one being inserted in said shaft and the other inxsaid sleeve, brackets swiveling on: said studs and having rearw-ardly extending tail pieces, rotary cutters mounted on said brackets, means for separating and approachingsaid tail pieces to swivel said brackets on their studs, means of automaticallyfcausing said cutters to reverse their horizontal angles and to converge while the stave from between saidcuttersl; a

16,. A machine for jointing staves com is r ins t of staves.

prising -a longitudinal cylindrical Shea, a

short slotted sleeve. thereon, curved blocks fitting said shaft and sleeve, studs projecting radially through said blocks, onebeing inserted in said shaft and theother in said sleeve, brackets swivelingon said studs and having rearwardly-extending tail pieces,

rotary cutters mounted on, said brackets, and

means for separatingand approaching said tail p1eces toswivel saidbrackets on their studs, said means consisting of cam fingers on said'tail pieces,and actuating members engagingwith said cam fingers and, operatively connected with the driving shaft of the machine. I v v 17. A machine for jointing staves comprising a longitudinal cylindrical shaft, a

short slotted sleeve thereon,curved blocks studs projecting fitting said shaft and sleeve, radially throughsaidblocks, one being inserted in said shaftand the other in said sleeve, brackets swiveling onv said studs and having rearwardly-extending tail pieces, ro-

tarycutter-s mounted on said brackets, and

means for approaching saidf tail pieces to swlvel said brackets on their studs, said means-cons sting of cam fingers on said-tail pieces, a: bell crank lever engaging therewitln;

on'the drivingshaft of theJm'achine,

andoperative connections between said cam and-said bell crank lever.

I A machine forjointing staves comprising a longitudinal cylindrical shaft, journaled iii-bearings, a short slotted sleeve thereon, curvedblocks fitting sai'dshaft and sleeve, :studs projecting radially through said blocks, one being inserted'in said shaft and the other in said sleeve, brackets swivel+ ing on said studs -and-having rearwardlyextending tail piece's,,rotary cutters mounted on said brac-kets, and means for approaching saldtall pieces toswivel said brackets on their studs, said-means for swiveling said cutters being adapted to cause themto converge-and diverge a varying amount and remain stationary while forming the quarters, said variable means being governed automatically when changing the ing-ular separation of said cutters for varying widths 19. machine for jointing staves comprising alongitudinal cylindrical shaft, a short slotted sleeve thereon, curved *blocks fitting said shaftand sleeve, studs projectv ing radially through said blocks, one being inserted in said shaft andthe other-in said sleeveg brackets swiveling on saidstuds and having rearwardlyextending tail pieces, rotaryfcutters mounted on said brackets,and means for separating andapproaching-said taillpiecesto swivel said brackets on their studs, vsaid means consisting of camfingers on .-said =tailpieces, a:bell crank lever, studs thereon carrying rollers engaging withthe' inner faces of said fingers, a strap 7 on said bell crank lever having portions engaging with the outer faces of said fingers, a cam on the drlvlng shaft of the machine, pivoted levers carryingrollers engaging therewith,

in a horizontal position, rotary cutters, means for varying the angular separation of said cutters to accommodate stave blanks of different widths, and means for swiveling said cutters to cause them to converge and, diverge a varying amount and remain stationary while forming quarters, said means being governed automatically by the-angular to said guide plates, and means for moving nting staves comseparation of said cutters.

22. A machine for joi prising an endless chain, a rigid table therefor, guide plates on said table, curved brackets projecting laterally from said guide plates, movable leaves adjacent to said guide plates and resting at one end on said brackets, tilting cutters, means for tilting them, and operative connections between said means and said movable leaves,'whereby the latter will always be kept in line with said cutters.

23. A machine for jointing staves comprising an endless chain carrier, guide platesv between which said chain travels, inclined saws, means for tilting the same, shoes embracing one edge of said saws, and means for causing said shoes to follow the movements of said saws, said guide plates being cut away adjacent to the cutting edges of said saws to permit said shoes to approach closely to the chain carrier.

24:. A machine for jointing staves comprising an endless chain carrier, a rigid bar forming a table on which said chain is sup-' ported, guide plates secured to the sides of. said bar, inclined saws on opposite sides of said bar, means for tilting said saws, shoes embracing one edge of said saws, and means for causing said shoes to follow the movements of saidsaws toward and away from said bar, the bar being deep and beveled downwardly at a point where the sawsare located, and the guide plates being cut away at a point opposite the shoes to'permit the Y shoes to approach the chain closely.

25. A machine for jointing staves com prising an endless chain, a rigid table there for, guide plates thereon, inclined saws, means for tilting the same, shoes embracing the inner edge of said saws, movable leaves said saws;

movement to the saws, shoes embracing .o

movable leaves adjacent tosaid guideplafgt;

drels, thereby a ording means for mprising a longitudinal cylin ricalshafi,

adjacent to said guide plates and attached to said shoes, and means for causing said leavfi and shoes to follow the tilting movements 261A machine for jointin staves com: prising an endless chain, a rigidtable there? for, guide plates thereon, inclined sa. means for'swiveling said sawson a mam: axis at or near the cutting point, means for giving a uniform degree ofreverse swiveling;

edgeof said saws, hinge joints forsaid sheetat or near the cutting point, and operatiyc connections between saidshoes and the means for swiveling said sawsso that tlpyih movements of the saws will be followed c F said shoes. I A

27. A machine for jointing staves com prising laterally adjustable and swiveled saws, an endless carrier, a rigid table thefi for, guide plates thereon, means for and lowering said carrier, table and plates as the stave blank passes between said, saws, outwardly bowed leaves adjacent.

with the cutting edges of thesaws.

'28. A machine for jointing staves prising laterally adjustable and swivelfl saws' and meansfor giving said saws-' variable and uniform degree of revem swiveling movement, an endless chm-infill rigid table therefor, guide plates therggn,

shoes hinged to one end of said leaves, I by holdin shoes inparallel position, a 1 tu'dinal s aft, brackets an larly move about the axis of said sha t, links coming;- .ing said brackets with said shoes, andzogfi nections at, the other end of said shaft wh bythe other ends of said leaves are larly movable about the axis of said she 29. A machine for jointing staves com prising av longitudinal shaft,';.'two' braem angularly movable about the axis theiqifi, longitudinally-inclined ways on each a carriage adjustable 0n the ways of bracket, and a saw mandrel journaled hearings in said carriage. j M ,K

30. A machine for jointing staves cow 1 prising two saws inclined toward each brackets carrying said saws'and swiveled'" axes coincidin substantially with the ting points -0 said saws, ways-on brackets inclined to the planes in which swivel, and carriages adjustable on ways and havin bearings for the sawa elevation and position of said saws so, 08 maintain the cutting point substantially; line with said axes.

31., A machine for jointin staves'coill short slotted sleeve thereon, curved bloc fitting said shaft and sleeve, pivots j 

